Draw the circuit diagram of an illuminated photodiode in reverse bias? How is photodiode used to measure light intensity?

Explanation

### Step-by-Step Solution:

1. **Understanding the Photodiode**:
- A photodiode is a semiconductor device that converts light into an electrical current. It operates on the principle of the photoelectric effect, where photons incident on the diode generate electron-hole pairs.

2. **Circuit Diagram of a Photodiode in Reverse Bias**:
- In reverse bias, the p-type terminal (anode) of the photodiode is connected to the negative terminal of a battery, and the n-type terminal (cathode) is connected to the positive terminal of the battery. This configuration prevents current from flowing under normal conditions but allows current to flow when light is incident on the diode.
- **Draw the Circuit**:
...